body {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    font-family: Arial, sans-serif;
}

header {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
    margin-bottom: 20px;
}

nav {
    background: #0fe9cc;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 20px;
}

main {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.avatar {
    width: 130px;
    height: 200px;
    border-radius: 50%;
    display: block;
    margin: 0 auto 15px auto;
}

@media (max-width:600px) {
    body {
        padding: 10px;
    }

    header, main {
        padding: 15px;
    }

    h1 {
        font-size: 24px;
    }
}

.buttons {
 text-align: center;
  margin: 20px 0;
}

.buttons button {
 background-color: #0fe9cc;
 border: none;
 color: white;
 padding: 10px 20px;
 text-align: center;
 text-decoration: none;
 display: inline-block;
 font-size: 16px;
 margin: 4px 2px;
 cursor: pointer;
 border-radius: 4px;
 transition: background-color 0.3s;
}

.buttons button:hover {
 background-color: #00c9b0;
}